* an STL container (as wrapper) for arrays of constant size.
*
* See
- * http://www.josuttis.com/cppcode
- * for details and the latest version.
+ * http://www.boost.org/libs/array/
+ * for documentation.
*
- * (C) Copyright Nicolai M. Josuttis 1999.
- * Permission to copy, use, modify, sell and distribute this software
- * is granted provided this copyright notice appears in all copies.
- * This software is provided "as is" without express or implied
- * warranty, and with no claim as to its suitability for any purpose.
+ * The original author site is at: http://www.josuttis.com/
*
- * Jul 31, 2000
+ * (C) Copyright Nicolai M. Josuttis 2001.
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ *
+ * 28 Dec 2010 - (mtc) Added cbegin and cend (and crbegin and crend) for C++Ox compatibility.
+ * 10 Mar 2010 - (mtc) fill method added, matching resolution of the standard library working group.
+ * See <http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#776> or Trac issue #3168
+ * Eventually, we should remove "assign" which is now a synonym for "fill" (Marshall Clow)
+ * 10 Mar 2010 - added workaround for SUNCC and !STLPort [trac #3893] (Marshall Clow)
+ * 29 Jan 2004 - c_array() added, BOOST_NO_PRIVATE_IN_AGGREGATE removed (Nico Josuttis)
+ * 23 Aug 2002 - fix for Non-MSVC compilers combined with MSVC libraries.
+ * 05 Aug 2001 - minor update (Nico Josuttis)
+ * 20 Jan 2001 - STLport fix (Beman Dawes)
+ * 29 Sep 2000 - Initial Revision (Nico Josuttis)
+ *
+ * Jan 29, 2004
*/
#ifndef BOOST_ARRAY_HPP
#define BOOST_ARRAY_HPP
+#include <boost/detail/workaround.hpp>
+
+#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400)
+# pragma warning(push)
+# pragma warning(disable:4996) // 'std::equal': Function call with parameters that may be unsafe
+# pragma warning(disable:4510) // boost::array<T,N>' : default constructor could not be generated
+# pragma warning(disable:4610) // warning C4610: class 'boost::array<T,N>' can never be instantiated - user defined constructor required
+#endif
+
#include <cstddef>
#include <stdexcept>
-#include <iterator>
+#include <boost/assert.hpp>
+#include <boost/swap.hpp>
+
+// Handles broken standard libraries better than <iterator>
+#include <boost/detail/iterator.hpp>
+#include <boost/throw_exception.hpp>
#include <algorithm>
-// BUG-FIX for compilers that don't support
-// std::size_t and std::ptrdiff_t yet
-// (such as gcc)
+// FIXES for broken compilers
#include <boost/config.hpp>
-// LGB
-// namespace boost {
+
+namespace boost {
template<class T, std::size_t N>
class array {
typedef const T& const_reference;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
-
+
// iterator support
- iterator begin() { return elems; }
- const_iterator begin() const { return elems; }
- iterator end() { return elems+N; }
- const_iterator end() const { return elems+N; }
+ iterator begin() { return elems; }
+ const_iterator begin() const { return elems; }
+ const_iterator cbegin() const { return elems; }
+
+ iterator end() { return elems+N; }
+ const_iterator end() const { return elems+N; }
+ const_iterator cend() const { return elems+N; }
// reverse iterator support
-# if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_MSVC_STD_ITERATOR) && !defined(BOOST_NO_STD_ITERATOR_TRAITS)
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
-# else
- // workaround for broken reverse_iterator implementations due to no partial specialization
+#elif defined(_MSC_VER) && (_MSC_VER == 1300) && defined(BOOST_DINKUMWARE_STDLIB) && (BOOST_DINKUMWARE_STDLIB == 310)
+ // workaround for broken reverse_iterator in VC7
+ typedef std::reverse_iterator<std::_Ptrit<value_type, difference_type, iterator,
+ reference, iterator, reference> > reverse_iterator;
+ typedef std::reverse_iterator<std::_Ptrit<value_type, difference_type, const_iterator,
+ const_reference, iterator, reference> > const_reverse_iterator;
+#elif defined(_RWSTD_NO_CLASS_PARTIAL_SPEC)
+ typedef std::reverse_iterator<iterator, std::random_access_iterator_tag,
+ value_type, reference, iterator, difference_type> reverse_iterator;
+ typedef std::reverse_iterator<const_iterator, std::random_access_iterator_tag,
+ value_type, const_reference, const_iterator, difference_type> const_reverse_iterator;
+#else
+ // workaround for broken reverse_iterator implementations
typedef std::reverse_iterator<iterator,T> reverse_iterator;
typedef std::reverse_iterator<const_iterator,T> const_reverse_iterator;
-# endif
+#endif
reverse_iterator rbegin() { return reverse_iterator(end()); }
const_reverse_iterator rbegin() const {
return const_reverse_iterator(end());
}
+ const_reverse_iterator crbegin() const {
+ return const_reverse_iterator(end());
+ }
+
reverse_iterator rend() { return reverse_iterator(begin()); }
const_reverse_iterator rend() const {
return const_reverse_iterator(begin());
}
+ const_reverse_iterator crend() const {
+ return const_reverse_iterator(begin());
+ }
// operator[]
- reference operator[](size_type i) { return elems[i]; }
- const_reference operator[](size_type i) const { return elems[i]; }
+ reference operator[](size_type i)
+ {
+ BOOST_ASSERT( i < N && "out of range" );
+ return elems[i];
+ }
+
+ const_reference operator[](size_type i) const
+ {
+ BOOST_ASSERT( i < N && "out of range" );
+ return elems[i];
+ }
// at() with range check
reference at(size_type i) { rangecheck(i); return elems[i]; }
const_reference at(size_type i) const { rangecheck(i); return elems[i]; }
// front() and back()
- reference front() { return elems[0]; }
- const_reference front() const { return elems[0]; }
- reference back() { return elems[N-1]; }
- const_reference back() const { return elems[N-1]; }
+ reference front()
+ {
+ return elems[0];
+ }
+
+ const_reference front() const
+ {
+ return elems[0];
+ }
+
+ reference back()
+ {
+ return elems[N-1];
+ }
+
+ const_reference back() const
+ {
+ return elems[N-1];
+ }
// size is constant
static size_type size() { return N; }
static size_type max_size() { return N; }
enum { static_size = N };
- public:
// swap (note: linear complexity)
void swap (array<T,N>& y) {
- std::swap_ranges(begin(),end(),y.begin());
+ for (size_type i = 0; i < N; ++i)
+ boost::swap(elems[i],y.elems[i]);
}
- // direct access to data
+ // direct access to data (read-only)
const T* data() const { return elems; }
+ T* data() { return elems; }
+
+ // use array as C array (direct read/write access to data)
+ T* c_array() { return elems; }
// assignment with type conversion
template <typename T2>
}
// assign one value to all elements
- void assign (const T& value)
+ void assign (const T& value) { fill ( value ); } // A synonym for fill
+ void fill (const T& value)
{
std::fill_n(begin(),size(),value);
}
-# ifndef BOOST_NO_PRIVATE_IN_AGGREGATE
- private:
-# endif
- // private member functions are allowed in aggregates [ISO 8.5.1]
+ // check range (may be private because it is static)
static void rangecheck (size_type i) {
- if (i >= size()) { throw std::range_error("array"); }
+ if (i >= size()) {
+ std::out_of_range e("array<>: index out of range");
+ boost::throw_exception(e);
+ }
}
};
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+ template< class T >
+ class array< T, 0 > {
+
+ public:
+ // type definitions
+ typedef T value_type;
+ typedef T* iterator;
+ typedef const T* const_iterator;
+ typedef T& reference;
+ typedef const T& const_reference;
+ typedef std::size_t size_type;
+ typedef std::ptrdiff_t difference_type;
+
+ // iterator support
+ iterator begin() { return iterator( reinterpret_cast< T * >( this ) ); }
+ const_iterator begin() const { return const_iterator( reinterpret_cast< const T * >( this ) ); }
+ const_iterator cbegin() const { return const_iterator( reinterpret_cast< const T * >( this ) ); }
+
+ iterator end() { return begin(); }
+ const_iterator end() const { return begin(); }
+ const_iterator cend() const { return cbegin(); }
+
+ // reverse iterator support
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_MSVC_STD_ITERATOR) && !defined(BOOST_NO_STD_ITERATOR_TRAITS)
+ typedef std::reverse_iterator<iterator> reverse_iterator;
+ typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+#elif defined(_MSC_VER) && (_MSC_VER == 1300) && defined(BOOST_DINKUMWARE_STDLIB) && (BOOST_DINKUMWARE_STDLIB == 310)
+ // workaround for broken reverse_iterator in VC7
+ typedef std::reverse_iterator<std::_Ptrit<value_type, difference_type, iterator,
+ reference, iterator, reference> > reverse_iterator;
+ typedef std::reverse_iterator<std::_Ptrit<value_type, difference_type, const_iterator,
+ const_reference, iterator, reference> > const_reverse_iterator;
+#elif defined(_RWSTD_NO_CLASS_PARTIAL_SPEC)
+ typedef std::reverse_iterator<iterator, std::random_access_iterator_tag,
+ value_type, reference, iterator, difference_type> reverse_iterator;
+ typedef std::reverse_iterator<const_iterator, std::random_access_iterator_tag,
+ value_type, const_reference, const_iterator, difference_type> const_reverse_iterator;
+#else
+ // workaround for broken reverse_iterator implementations
+ typedef std::reverse_iterator<iterator,T> reverse_iterator;
+ typedef std::reverse_iterator<const_iterator,T> const_reverse_iterator;
+#endif
+
+ reverse_iterator rbegin() { return reverse_iterator(end()); }
+ const_reverse_iterator rbegin() const {
+ return const_reverse_iterator(end());
+ }
+ const_reverse_iterator crbegin() const {
+ return const_reverse_iterator(end());
+ }
+
+ reverse_iterator rend() { return reverse_iterator(begin()); }
+ const_reverse_iterator rend() const {
+ return const_reverse_iterator(begin());
+ }
+ const_reverse_iterator crend() const {
+ return const_reverse_iterator(begin());
+ }
+
+ // operator[]
+ reference operator[](size_type /*i*/)
+ {
+ return failed_rangecheck();
+ }
+
+ const_reference operator[](size_type /*i*/) const
+ {
+ return failed_rangecheck();
+ }
+
+ // at() with range check
+ reference at(size_type /*i*/) { return failed_rangecheck(); }
+ const_reference at(size_type /*i*/) const { return failed_rangecheck(); }
+
+ // front() and back()
+ reference front()
+ {
+ return failed_rangecheck();
+ }
+
+ const_reference front() const
+ {
+ return failed_rangecheck();
+ }
+
+ reference back()
+ {
+ return failed_rangecheck();
+ }
+
+ const_reference back() const
+ {
+ return failed_rangecheck();
+ }
+
+ // size is constant
+ static size_type size() { return 0; }
+ static bool empty() { return true; }
+ static size_type max_size() { return 0; }
+ enum { static_size = 0 };
+
+ void swap (array<T,0>& /*y*/) {
+ }
+
+ // direct access to data (read-only)
+ const T* data() const { return 0; }
+ T* data() { return 0; }
+
+ // use array as C array (direct read/write access to data)
+ T* c_array() { return 0; }
+
+ // assignment with type conversion
+ template <typename T2>
+ array<T,0>& operator= (const array<T2,0>& ) {
+ return *this;
+ }
+
+ // assign one value to all elements
+ void assign (const T& value) { fill ( value ); }
+ void fill (const T& ) {}
+
+ // check range (may be private because it is static)
+ static reference failed_rangecheck () {
+ std::out_of_range e("attempt to access element of an empty array");
+ boost::throw_exception(e);
+#if defined(BOOST_NO_EXCEPTIONS) || (!defined(BOOST_MSVC) && !defined(__PATHSCALE__))
+ //
+ // We need to return something here to keep
+ // some compilers happy: however we will never
+ // actually get here....
+ //
+ static T placeholder;
+ return placeholder;
+#endif
+ }
+ };
+#endif
+
// comparisons
template<class T, std::size_t N>
bool operator== (const array<T,N>& x, const array<T,N>& y) {
x.swap(y);
}
-// LGB
-// } /* namespace boost */
+#if defined(__SUNPRO_CC)
+// Trac ticket #4757; the Sun Solaris compiler can't handle
+// syntax like 'T(&get_c_array(boost::array<T,N>& arg))[N]'
+//
+// We can't just use this for all compilers, because the
+// borland compilers can't handle this form.
+ namespace detail {
+ template <typename T, std::size_t N> struct c_array
+ {
+ typedef T type[N];
+ };
+ }
+
+ // Specific for boost::array: simply returns its elems data member.
+ template <typename T, std::size_t N>
+ typename detail::c_array<T,N>::type& get_c_array(boost::array<T,N>& arg)
+ {
+ return arg.elems;
+ }
+
+ // Specific for boost::array: simply returns its elems data member.
+ template <typename T, std::size_t N>
+ typename const detail::c_array<T,N>::type& get_c_array(const boost::array<T,N>& arg)
+ {
+ return arg.elems;
+ }
+#else
+// Specific for boost::array: simply returns its elems data member.
+ template <typename T, std::size_t N>
+ T(&get_c_array(boost::array<T,N>& arg))[N]
+ {
+ return arg.elems;
+ }
+
+ // Const version.
+ template <typename T, std::size_t N>
+ const T(&get_c_array(const boost::array<T,N>& arg))[N]
+ {
+ return arg.elems;
+ }
+#endif
+
+#if 0
+ // Overload for std::array, assuming that std::array will have
+ // explicit conversion functions as discussed at the WG21 meeting
+ // in Summit, March 2009.
+ template <typename T, std::size_t N>
+ T(&get_c_array(std::array<T,N>& arg))[N]
+ {
+ return static_cast<T(&)[N]>(arg);
+ }
+
+ // Const version.
+ template <typename T, std::size_t N>
+ const T(&get_c_array(const std::array<T,N>& arg))[N]
+ {
+ return static_cast<T(&)[N]>(arg);
+ }
+#endif
+
+} /* namespace boost */
+
+
+#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400)
+# pragma warning(pop)
+#endif
#endif /*BOOST_ARRAY_HPP*/
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